detektu
OpenAI API changes
Info

Documentation section changed: 2025-09-26: Legacy GPT model snapshots (March 2026 shutdown)

doc:019fb619-9a96-7dbf-bd33-e06fdf8a22fb::Deprecations/Past deprecations/2025-09-26: Legacy GPT model snapshots (March 2026 shutdown)
Product
OpenAI API
Source
HTML
Change kind
Section Changed
Detected
Last updated

Deterministic evidence

Before / after

Extracted from OpenAI's published contract. Open the source ↗

−1+11 change

1 / 1
"type": "paragraph"
"type": "paragraph"
},
},
{
{
"content": "Shutdown date\tModel / system\tRecommended replacement\n2026‑03‑26\tgpt-4-0314\tgpt-5 or gpt-4.1*\n2026‑03‑26\tgpt-4-1106-preview\tgpt-5 or gpt-4.1*\n2026‑03‑26\tgpt-4-0125-preview (including gpt-4-turbo-preview and gpt-4-turbo-preview-completions, which point to this snapshot)\tgpt-5 or gpt-4.1*",
"content": "Shutdown date\tModel / system\tRecommended replacement\n2026‑03‑26\tgpt-4-0314\tgpt-5 or gpt-4.1*\n2026‑03‑26\tgpt-4-0125-preview (including gpt-4-turbo-preview and gpt-4-turbo-preview-completions, which point to this snapshot)\tgpt-5 or gpt-4.1*",
"type": "table"
"type": "table"
},
},
{
{

Interpreted documentation change

What the vendor announced

The evidence discusses deprecation and shutdown of legacy GPT-4 snapshots with March 26, 2026 as the shutdown date and lists recommended replacements (gpt-5 or gpt-4.1*). This indicates a deterministic vendor documentation change involving deprecation of specific model snapshots and their replacements. The explicit deadline is 2026-03-26, and the replacement endpoint is not directly specified in the text; a general API reference page is provided as context.

To improve reliability and make it easier for developers to choose the right models, we deprecated a set of older OpenAI models with declining usage. Access to these models was shut down on March 26, 2026. Shutdown date Model / system Recommended replacement 2026‑03‑26 gpt-4-0314 gpt-5 or gpt-4.1* 2026‑03‑26 gpt-4-0125-preview (including gpt-4-turbo-preview and gpt-4-turbo-preview-completions, which point to this snapshot) gpt-5 or gpt-4.1* *For tasks that are especially latency sensitive and don’t require reasoning

Deadline Mar 26, 2026Vendor source ↗

Monitored for you

Does this change affect your integration?

Choose the operations and fields your services use. Detektu matches OpenAI findings to that declared usage so your team can review the relevant evidence. No agent or repository access required.

Monitor OpenAI free See pricing

Multi-source correlation

Other OpenAI findings correlated with this change across sources.

  1. Info
    SDK release 7.39.0sdk:npm/openai@7.39.0
    OpenAI API
  2. Deprecation
    SDK version 5.22.1 yankedsdk:npm/openai@5.22.1
    OpenAI API
  3. Info
    SDK release 7.39.0sdk:npm/openai@7.39.0
    OpenAI API
  4. Info
    SDK release 7.38.0sdk:npm/openai@7.38.0
    OpenAI API
  5. Info
    SDK release 7.37.0sdk:npm/openai@7.37.0
    OpenAI API
  6. Deprecation
    SDK version 5.22.0 yankedsdk:npm/openai@5.22.0
    OpenAI API
  7. Deprecation
    SDK version 5.21.0 yankedsdk:npm/openai@5.21.0
    OpenAI API
  8. Info
    SDK release 7.38.0sdk:npm/openai@7.38.0
    OpenAI API
  9. Info
    SDK release 7.37.0sdk:npm/openai@7.37.0
    OpenAI API
  10. Info
    SDK release 7.36.0sdk:npm/openai@7.36.0
    OpenAI API
  11. Info
    SDK release 7.35.0sdk:npm/openai@7.35.0
    OpenAI API
  12. Deprecation
    SDK version 5.20.3 yankedsdk:npm/openai@5.20.3
    OpenAI API
  13. Deprecation
    SDK version 5.20.2 yankedsdk:npm/openai@5.20.2
    OpenAI API
  14. Info
    SDK release 7.36.0sdk:npm/openai@7.36.0
    OpenAI API
  15. Info
    SDK release 7.35.0sdk:npm/openai@7.35.0
    OpenAI API
  16. Info
    SDK release 7.34.0sdk:npm/openai@7.34.0
    OpenAI API
  17. Deprecation
    SDK version 5.20.1 yankedsdk:npm/openai@5.20.1
    OpenAI API
  18. Info
    SDK release 7.34.0sdk:npm/openai@7.34.0
    OpenAI API
  19. Info
    SDK release 7.33.0sdk:npm/openai@7.33.0
    OpenAI API
  20. Deprecation
    SDK version 5.20.0 yankedsdk:npm/openai@5.20.0
    OpenAI API
  21. Info
    SDK release 7.33.0sdk:npm/openai@7.33.0
    OpenAI API